Circular Connectors

Image Part Number Description / PDF Quantity Rfq
PXP9051/06/S/1

PXP9051/06/S/1

Bulgin

CONN RCPT 6POS W/SKT 1/0

0

PXM7010/03P/ST/1113/SN

PXM7010/03P/ST/1113/SN

Bulgin

CONN PLUG MALE 3POS NICKEL SCREW

0

PX0767/S

PX0767/S

Bulgin

CONN RCPT FMALE 6P NICKEL SCREW

110

PX0727/P

PX0727/P

Bulgin

CONN RCPT MALE 9POS TIN CRIMP

0

PX0430/SE

PX0430/SE

Bulgin

CONN PLUG FMALE 3P SOLDER TABS

99

PX0941/05/P

PX0941/05/P

Bulgin

CONN RCPT MALE 5POS NICKEL SCREW

0

PXM7011/03S/ST/1315/SN

PXM7011/03S/ST/1315/SN

Bulgin

CONN RCPT FMALE 3P NICKEL SCREW

0

PXM6012/03P/ST

PXM6012/03P/ST

Bulgin

CONN PLUG MALE 3POS NICKEL SCREW

0

PXP7011/03P/ST/0507

PXP7011/03P/ST/0507

Bulgin

CONN RCPT MALE 3POS NICKEL SCREW

15

PXP9011/08/S/1

PXP9011/08/S/1

Bulgin

RCPT 8POS W/SKT 4X16AWG 4X4

0

PX0921/10/P

PX0921/10/P

Bulgin

CONN RCPT MALE 10P NICKEL SCREW

0

PXPPAM12RAF05ASTPG9

PXPPAM12RAF05ASTPG9

Bulgin

CONN PLUG FMALE 5POS GOLD SCREW

59

PXMBNI12FIM04DSCPG7

PXMBNI12FIM04DSCPG7

Bulgin

CONN RCPT MALE 4POS SOLDER CUP

11

PXMBNI16RPF12ASCM16

PXMBNI16RPF12ASCM16

Bulgin

CONN PLUG FMALE 12P SOLDER CUP

62

PXM7011/02P/ST/1315/SN

PXM7011/02P/ST/1315/SN

Bulgin

CONN RCPT MALE 2POS NICKEL SCREW

0

PXPPAM12FBF04ASTPG9

PXPPAM12FBF04ASTPG9

Bulgin

CONN PLUG FMALE 4POS GOLD SCREW

58

PXMBNI12RPF04DPCM16

PXMBNI12RPF04DPCM16

Bulgin

CONN PLUG FMALE 4POS GOLD SOLDER

96

PXMBNI05FPM03AFL001

PXMBNI05FPM03AFL001

Bulgin

CONN RCPT MALE 3P WIRE LEADS

66

PXMBNI12RPM05APCPG9

PXMBNI12RPM05APCPG9

Bulgin

CONN RCPT MALE 5POS GOLD SOLDER

30

PXMBNI08FBF03ASC

PXMBNI08FBF03ASC

Bulgin

CONN PLUG FMALE 3POS SOLDER CUP

15

Circular Connectors

1. Overview

Circular connectors are multi-pin electrical connectors with circular contact arrangements, designed for reliable signal/power transmission in harsh environments. They feature robust mechanical structures, environmental sealing, and high mating durability. These connectors are critical in aerospace, industrial automation, and medical equipment where vibration resistance and signal integrity are paramount.

2. Main Types & Functional Classification

TypeFunctional CharacteristicsApplication Examples
MIL-DTL-38999High-density, threaded coupling, EMI shieldingAerospace systems, military vehicles
USB Type-CReversible design, 10Gbps data rate, 100W power deliverySmartphones, laptops, PDAs
BNCBayonet locking, 2GHz frequency rangeTest equipment, video systems
LVDT CircularLinear variable differential transformer integrationIndustrial sensors, robotics

3. Structure & Components

Typical construction includes: - Shell: Aluminum alloy/zinc die-cast housing with corrosion-resistant plating - Contacts: Gold-plated phosphor bronze with 0.5-2.0mm diameter - Insulation: High-temperature thermoplastic (200 C rating) - Sealing: IP67/IP68 rated elastomer gaskets - Mounting: Threaded/flange/clamp mechanisms

4. Key Technical Parameters

ParameterTypical RangeImportance
Voltage Rating50V-600VDetermines power transmission capacity
Current Rating1A-25A/contactAffects thermal performance
Contact Resistance 5m Impacts signal integrity
IP RatingIP40-IP68Defines environmental protection level
Operating Temp-65 C to +200 CMaterial stability indicator
Mating Cycles500-10,000Service life predictor

5. Application Fields

  • Aerospace: Flight control systems, satellite antennas
  • Industrial: CNC machines, automated guided vehicles
  • Medical: MRI scanners, patient monitoring systems
  • Telecom: 5G base stations, fiber optic networks
  • Consumer: VR headsets, gaming peripherals

6. Leading Manufacturers

ManufacturerKey ProductsSpecial Features
AmphenolMIL-DTL-38999 seriesComposite materials, EMI filtering
TE ConnectivityDEUTSCH D38999Thermoplastic housing, 2000V dielectric
MolexUSB Type-C 10GbpsShielded twinax design
DelphiAutomotive circular connectorsIP69K rating for EV charging
LemoPush-pull circular seriesSubminiature, 5000+ mating cycles

7. Selection Guidelines

Key considerations: 1. Environmental factors: Temperature extremes, fluid exposure 2. Electrical requirements: Signal type (analog/digital), current load 3. Mechanical constraints: Panel space, mating force limitations 4. Compliance standards: MIL-STD, ISO 6722, RoHS 5. Cost vs. longevity: High-cycle applications justify premium connectors

8. Industry Trends

Emerging developments include: - Miniaturization: 1.0mm contact pitch enabling wearable devices - High-speed transmission: 25Gbps+ differential pairs for industrial IoT - Smart connectors: Integrated sensors for condition monitoring - Material innovation: Graphene-coated contacts reducing resistance - Eco-design: Halogen-free thermoplastics meeting REACH regulations

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